Update license to be MIT and Apache

This isn't intended to restrict any use cases, I'm just standardising my
licensing across multiple projects.

Fix #4

1 files changed, 12 insertions, 5 deletions

diff --git a/README.md b/README.md
index 9ff01f1..090789c 100644
--- a/README.md
+++ b/README.md
@@ -180,10 +180,17 @@ to spend more time writing and publishing open source software.
 
 ## License
 
-Copyright 2017-present, Justin Wernick
+Copyright 2017-2023, Justin Wernick.
 
-This library can be used free of charge under either the ISC license
-or the GNU GPL 3.0.
+Licensed under either of
 
-- [https://opensource.org/licenses/ISC](https://opensource.org/licenses/ISC)
-- [http://www.gnu.org/licenses/gpl-3.0.html](http://www.gnu.org/licenses/gpl-3.0.html)
+* Apache License, Version 2.0
+  ([LICENSE-APACHE](LICENSE-APACHE) or <http://www.apache.org/licenses/LICENSE-2.0>)
+* MIT license
+  ([LICENSE-MIT](LICENSE-MIT) or <http://opensource.org/licenses/MIT>)
+
+at your option.
+
+Unless you explicitly state otherwise, any contribution intentionally submitted
+for inclusion in the work by you, as defined in the Apache-2.0 license, shall be
+dual licensed as above, without any additional terms or conditions.